lemusa 86 Report post Posted August 6, 2020 I've got this loose in the engine bay of a 2003 e39 540i. Anyone know what it's for? I can't find anything to plug it in to. Quote Share this post Link to post Share on other sites
lemusa 86 Report post Posted October 6, 2020 Still haven't figured this out. I assume it's an option I don't have but it seems very ungerman to leave a connector loose in the engine bay... Quote Share this post Link to post Share on other sites
hqstu 780 Report post Posted October 6, 2020 Bonnet switch for alarm which goes on cabin air filter box. Switch probably thrown away by previous owner as they fail resulting in annoying alarm activations. Quote Share this post Link to post Share on other sites
adro 1083 Report post Posted October 6, 2020 2 minutes ago, hqstu said: Bonnet switch for alarm which goes on cabin air filter box. Switch probably thrown away by previous owner as they fail resulting in annoying alarm activations. Yep, I have the same feature ? Quote Share this post Link to post Share on other sites
hqstu 780 Report post Posted October 6, 2020 New switches are somewhat expensive USD40 from FCP for what they are, but the asian continent has cheapies if you want to risk it... 61319119057 Quote Share this post Link to post Share on other sites
lemusa 86 Report post Posted October 6, 2020 Thanks Fellas. I think I can live without it. As far as I'm concerned, if someone has forced my bonnet open then they're already committed to whatever they intend to do! Quote Share this post Link to post Share on other sites
